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/* SPDX-License-Identifier: GPL-2.0 / #ifndef _NET_INET_IPX_H_ #define _NET_INET_IPX_H_ / * The following information is in its entirety obtained from: * * Novell 'IPX Router Specification' Version 1.10 * Part No. 107-000029-001 * * Which is available from ftp.novell.com / #include <linux/netdevice.h> #include <net/datalink.h> #include <linux/ipx.h> #include <linux/list.h> #include <linux/slab.h> #include <linux/refcount.h> struct ipx_address { __be32 net; __u8 node[IPX_NODE_LEN]; __be16 sock; }; #define ipx_broadcast_node "\377\377\377\377\377\377" #define ipx_this_node "\0\0\0\0\0\0" #define IPX_MAX_PPROP_HOPS 8 struct ipxhdr { __be16 ipx_checksum __packed; #define IPX_NO_CHECKSUM cpu_to_be16(0xFFFF) __be16 ipx_pktsize __packed; __u8 ipx_tctrl; __u8 ipx_type; #define IPX_TYPE_UNKNOWN 0x00 #define IPX_TYPE_RIP 0x01 / may also be 0 / #define IPX_TYPE_SAP 0x04 / may also be 0 / #define IPX_TYPE_SPX 0x05 / SPX protocol / #define IPX_TYPE_NCP 0x11 / $lots for docs on this (SPIT) / #define IPX_TYPE_PPROP 0x14 / complicated flood fill brdcast / struct ipx_address ipx_dest __packed; struct ipx_address ipx_source __packed; }; / From af_ipx.c / extern int sysctl_ipx_pprop_broadcasting; struct ipx_interface { / IPX address / __be32 if_netnum; unsigned char if_node[IPX_NODE_LEN]; refcount_t refcnt; / physical device info / struct net_device if_dev; struct datalink_proto if_dlink; __be16 if_dlink_type; / socket support / unsigned short if_sknum; struct hlist_head if_sklist; spinlock_t if_sklist_lock; / administrative overhead / int if_ipx_offset; unsigned char if_internal; unsigned char if_primary; struct list_head node; / node in ipx_interfaces list / }; struct ipx_route { __be32 ir_net; struct ipx_interface ir_intrfc; unsigned char ir_routed; unsigned char ir_router_node[IPX_NODE_LEN]; struct list_head node; /* node in ipx_routes list / refcount_t refcnt; }; struct ipx_cb { u8 ipx_tctrl; __be32 ipx_dest_net; __be32 ipx_source_net; struct { __be32 netnum; int index; } last_hop; }; #include <net/sock.h> struct ipx_sock { / struct sock has to be the first member of ipx_sock / struct sock sk; struct ipx_address dest_addr; struct ipx_interface intrfc; __be16 port; #ifdef CONFIG_IPX_INTERN unsigned char node[IPX_NODE_LEN]; #endif unsigned short type; /* * To handle special ncp connection-handling sockets for mars_nwe, * the connection number must be stored in the socket. / unsigned short ipx_ncp_conn; }; static inline struct ipx_sock ipx_sk(struct sock sk) { return (struct ipx_sock )sk; } #define IPX_SKB_CB(__skb) ((struct ipx_cb )&((__skb)->cb[0])) #define IPX_MIN_EPHEMERAL_SOCKET 0x4000 #define IPX_MAX_EPHEMERAL_SOCKET 0x7fff extern struct list_head ipx_routes; extern rwlock_t ipx_routes_lock; extern struct list_head ipx_interfaces; struct ipx_interface ipx_interfaces_head(void); extern spinlock_t ipx_interfaces_lock; extern struct ipx_interface ipx_primary_net; int ipx_proc_init(void); void ipx_proc_exit(void); const char ipx_frame_name(__be16); const char ipx_device_name(struct ipx_interface intrfc); static __inline__ void ipxitf_hold(struct ipx_interface intrfc) { refcount_inc(&intrfc->refcnt); } void ipxitf_down(struct ipx_interface intrfc); struct ipx_interface ipxitf_find_using_net(__be32 net); int ipxitf_send(struct ipx_interface intrfc, struct sk_buff skb, char node); __be16 ipx_cksum(struct ipxhdr packet, int length); int ipxrtr_add_route(__be32 network, struct ipx_interface intrfc, unsigned char node); void ipxrtr_del_routes(struct ipx_interface intrfc); int ipxrtr_route_packet(struct sock sk, struct sockaddr_ipx usipx, struct msghdr msg, size_t len, int noblock); int ipxrtr_route_skb(struct sk_buff skb); struct ipx_route ipxrtr_lookup(__be32 net); int ipxrtr_ioctl(unsigned int cmd, void __user arg); static __inline__ void ipxitf_put(struct ipx_interface intrfc) { if (refcount_dec_and_test(&intrfc->refcnt)) ipxitf_down(intrfc); } static __inline__ void ipxrtr_hold(struct ipx_route rt) { refcount_inc(&rt->refcnt); } static __inline__ void ipxrtr_put(struct ipx_route rt) { if (refcount_dec_and_test(&rt->refcnt)) kfree(rt); } #endif / _NET_INET_IPX_H_ */

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